Dual element Dual Element Transducers are two crystal elements transducers in one housing. These transducers create V shaped sound path in inspected material. One element is transmitter of longitudinal waves, and other one is receiver. A dual element transducer is used in applications where is needed higher resolution, for instance for wall thickness measurement, corrosion mapping, detection of inclusions, porosity and laminations.
Phased array Phased array ultrasonic transducers for nondestructive testing with Flaw detectors. The beam can be moved electronically, without moving the probe, and can be swept through a wide volume of material at high speed. The beam is controllable because a phased array probe is made up of multiple small elements, each of which can be pulsed individually at a computer-calculated timing. The basic probes are in two size (small with 16 elements and large with 32 elements).
EMAT
Transducers are electromagnetic acoustic transducers using a principle of Lorentz force in magnetic field. Main advantage of EMAT transducer is that no coupling is required and not needed to be removed paintings from tested materials. The EMAT probe can be used in contact with or at small distance from material surface.